Improvement in fertilizers



(defied $111125 flaunt @lljlim BENJAMIN R. GROASDALE', OF PHILADELPHIA,PENNSYLVANIA.

Letters Patent Not-106,918, dated August 30,1870; anteda'ted August 19,187 0.

IMPROV'BMEN'I IN PERTILIZERSf The Schedule referred to in these LettersPatent and making part of the same.

To an whom it mag concern Be itknown thatI, BENJAMIN R. OROASDALE, ofthe city and county of- Philadelphiaand State of Pennsylvania, haveinvented a certain Improvementin l ertilizersfrom Hoofs and Horns ofAnimals; and I do hereby declare that the subjoined specification is afull, clear, and exact descn'ption thereof, sufficient to enable thoseskilled in the art to make the same.

In manufacturing a fertilizer from the hoofs and horns-of animals by myimproved process, I use any suitable furnace, which, heated by thedirectaction of .fuel or by heated air, or superheated steam, and whichfurnace the temperature should be such as to produce the desired degreeof heat (namely, about 550 Fahrenheit) without producing combustion,for, it the temperature of heat is raised too high, the ammonia in thematter heated will be expelled, and the product injured, the objectbeing to heat them to the.-

witnesses.

B. It. OROASDALE.

' Witnesses J. L. LOFLAND, MAURIon E. FAGAN. v

